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    "Could not open a connection to your authentication agent" · GitHub

    "Could not open a connection to your authentication agent" - ssh-agent.md

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    ssh-agent.md

    SSH authentication agent does not automatically start when using it from a remote server. This result in the following error message:

    $ git pull

    Permission denied (publickey).

    fatal: The remote end hung up unexpectedly

    $ ssh-add ~/my-ssh-key.pem

    Could not open a connection to your authentication agent.

    To fix it requires manually starting ssh-agent:

    $ eval `ssh-agent -s`

    Agent pid 13442

    $ ssh-add ~/my-ssh-key.pem

    Identity added: /home/user/my-ssh-key.pem (/home/user/my-ssh-key.pem)

    $ git pull

    sanjay-io commented on Dec 15, 2021

    Thanks, this works with starting ssh-agent within Github Actions as well.

    Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

    Source : gist.github.com

    Fix: Could not open a connection to your authentication agent

    You might get an error that reads "could not open a connection to your authentication agent" when you try and add a key passphrase by using the ssh-add

    Fix: Could not open a connection to your authentication agent

    Kevin ArrowsJune 14, 2019 3 minutes read

    You might get an error that reads “could not open a connection to your authentication agent” when you try and add a key passphrase by using the ssh-add command. This particular problem is usually caused by the ssh-agent not getting correctly assigned, which is why so many people find it becomes a problem in slightly unusual circumstances.

    For instance, you might find that you get this error when using RaspberryPi running Raspbian, an embedded router with a fished out command prompt or an Android Linux terminal. You can easily fix it with a simple command that doesn’t require you to play around at all no matter what type of device that you’re working on or which shell you happen to be working from.

    Fixing Authentication Agent Errors

    Assuming that you already have the ssh-agent running, you shouldn’t have to start it up again. Instead, you’ll want to try adding your key passphrase by running ssh-add from the command line. When you do, you more than likely receive some kind of error that reads “Could not open a connection to your authentication agent” along with generally no other text at all. This isn’t exactly the most helpful command, and some users find that they play around for a long time before they found the answer because it doesn’t lead them in the path of the right answer.

    First off, while it seems a bit pedantic, check to make sure that you’re connected to the Internet or whatever other type of networking protocol you’re working with because it could be that you’re merely not connected to the network. This is especially a problem when you’re working with some kind of non-standard LAN equipment where you are only using ssh over some sort of a private network instead of through Ethernet or Wi-Fi.

    As long as you’re sure you’re connected, try using ssh-add ~/.ssh/id_rsa, having replaced the file name with the actual file name of the key that you were trying to add. We actually named the key on our test machine ~/.ssh/id_rsa, which is the name of the sample one though you probably have a different name. You might get a prompt to “Enter passphrase,” which is silent like those in a Linux virtual terminal. Should this accept your passphrase, then you’re perfectly fine and need no further work.

    On the other hand, if you get the “Could not open a connection to your authentication agent” error again, the agent needs full reassignment. If you’re working with the regular shell, then just run ssh-agent /bin/sh and then ssh-add ~/.ssh/id_rsa, once again making sure to replace the name of the key. You should have the prompt at this point. Those using pure bash who don’t mind what some in the Linux community refer to as “bashisms” in their ssh client can merely use ssh-agent bash and then use the ssh-add command. Most people will find that both root and regular users have bash in their path and don’t need anything else.

    Users of fish-shell will want to try either ssh-agent /usr/bin/fish and then ssh-add ~/.ssh/id_rsa instead. The above, however, would work fine for those using the Bourne, bash or Almquist shells in an overwhelming majority of cases. If things are working now, then you don’t need to do anything else. Those using the C-Shell or tcsh might run into a problem at this point, though.

    If you’re in this situation, then try eval ‘ssh-agent -c’ followed by ssh-add ~/.ssh/id_rsa to get your shell agent registered. This is because tcsh does things a bit differently, though most embedded systems and the like won’t have it. In either case, you should have a working ssh connection at this point as long as you’ve typed everything correctly. If you make any mistakes, then you can just repeat the command as none of these are destructive.

    Depending on your configuration, you may have to do this each time that you log onto your ssh connection after a restart. In any case, though, the problem is easily fixed with a single command so you won’t have to sit there playing around afterwards.

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    Kevin Arrows Email Twitter LinkedIn

    Kevin is a dynamic and self-motivated information technology professional, with a Thorough knowledge of all facets pertaining to network infrastructure design, implementation and administration. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget.

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    Source : appuals.com

    git

    I am running into this error of: $ git push heroku master Warning: Permanently added the RSA host key for IP address '50.19.85.132' to the list of known hosts. ! Your key with fingerprint b7:fd:...

    Could not open a connection to your authentication agent

    Ask Question

    Asked 8 years, 9 months ago

    Modified 1 month ago

    Viewed 1.8m times 1977

    I am running into this error of:

    $ git push heroku master

    Warning: Permanently added the RSA host key for IP address '50.19.85.132' to the list of known hosts.

    ! Your key with fingerprint b7:fd:15:25:02:8e:5f:06:4f:1c:af:f3:f0:c3:c2:65 is not authorized to access bitstarter.

    I tried to add the keys and I get this error below:

    $ ssh-add ~/.ssh/id_rsa.pub

    Could not open a connection to your authentication agent.

    git ssh ssh-agent Share

    edited Feb 15, 2021 at 0:29

    one noa 3461 1 gold badge 3 3 silver badges 10 10 bronze badges

    asked Jul 24, 2013 at 23:26

    Danny Dai Smith 19.8k3 3 gold badges 11 11 silver badges 3 3 bronze badges 38

    Question: once you've gone through EVERY answer on this page, and none of them work. What can you do next? –

    Brandon Bertelsen May 7, 2015 at 2:08 16

    @BrandonBertelsen Try this one: $ ssh-agent /bin/sh and $ ssh-add $yourkey –

    shyam Feb 8, 2018 at 3:57

    @BrandonBertelsen Next you should use git config --list to see if you have set credential.helper - if you have you should remove this setting, as the helper is being unhelpful. –

    yoyo Mar 7, 2019 at 5:14

    Also see unix.stackexchange.com/a/48868 –

    djvg Oct 6, 2021 at 9:29 Add a comment

    38 Answers

    1 2 Next 2932

    Did You Start ssh-agent?

    You might need to start ssh-agent before you run the ssh-add command:

    eval `ssh-agent -s` ssh-add

    Note that this will start the agent for msysgit Bash on Windows. If you're using a different shell or operating system, you might need to use a variant of the command, such as those listed in the other answers.

    See the following answers:

    ssh-add complains: Could not open a connection to your authentication agent

    Git push requires username and password (contains detailed instructions on how to use ssh-agent)

    How to run (git/ssh) authentication agent?.

    Could not open a connection to your authentication agent

    To automatically start ssh-agent and allow a single instance to work in multiple console windows, see Start ssh-agent on login.

    Why do we need to use eval instead of just ssh-agent?

    To find out why, see this comment.

    Public vs Private Keys

    Also, whenever I use ssh-add, I always add private keys to it. The file ~/.ssh/id_rsa.pub looks like a public key, I'm not sure if that will work. Do you have a ~/.ssh/id_rsa file? If you open it in a text editor, does it say it's a private key?

    Share

    edited Dec 23, 2021 at 16:50

    Timo 2,4863 3 gold badges 22 22 silver badges 26 26 bronze badges

    answered Jul 25, 2013 at 3:37

    user456814 19

    @xtian I'm not sure that I understand the issue. I don't know the exact details, but I'm guessing that the private key is never sent over the network. I think ssh-add merely decrypts an encrypted private key on the host machine, so that it can be used locally...it's . I'm guessing that only the public keys are ever sent over a network. Is my understanding incorrect? –

    user456814

    Oct 5, 2013 at 20:00

    6

    You're too kind Cupcake. You're absolutely right. My bad. ex here; ssh-add adds the private key for the user's ssh-agent (running process) can act on the client/host's behalf with the server accepting rsa-whatever keys. Geez. I don't know what made me so excited. –

    xtian Oct 6, 2013 at 0:16 27

    I'm curious why eval ssh-agent -s works, but ssh-agent on it's own doesn't. –

    DanielM

    Mar 7, 2014 at 15:30

    20

    @DanielM: SSH needs two things in order to use ssh-agent: an ssh-agent instance running in the background, and an environment variable set that tells SSH which socket it should use to connect to the agent (SSH_AUTH_SOCK IIRC). If you just run ssh-agent then the agent will start, but SSH will have no idea where to find it. –

    Vanessa Phipps

    Apr 28, 2014 at 16:44

    4

    Thanks for replying though. I just noticed that you used backquote in the command. I am so confused why the backquote (`) work for eval command but not single/double quote (', ") on my bash shell? –

    Weishi Z

    Sep 13, 2014 at 1:22

    Show 19 more comments

    664

    I tried the other solutions to no avail. I made more research and found that the following command worked. I am using Windows 7 and Git Bash.

    eval $(ssh-agent)

    More information in: https://coderwall.com/p/rdi_wq (web archive version)

    Share

    edited Feb 23 at 13:00

    Jan Wilamowski 2,6902 2 gold badges 6 6 silver badges 17 17 bronze badges

    answered Feb 20, 2014 at 13:34

    Victor Alves 6,6651 1 gold badge 12 12 silver badges 15 15 bronze badges 14

    Worked on Windows 8 too. –

    Andreas Rudolph

    Mar 17, 2014 at 7:35

    7

    Great !! Worked with windows 10 also. –

    NitinM

    Nov 6, 2019 at 17:33

    2 Worked on Manjaro – fantom

    Dec 23, 2019 at 6:10

    Source : stackoverflow.com

    Do you want to see answer or more ?
    James 18 day ago
    4

    Guys, does anyone know the answer?

    Click For Answer